About 100 residents have gathered in Havelock North for a march to express frustration over the town's water contamination.
About 5200 people - a third of the area's population - have been affected since a campylobacter contamination was found in the town's water supply nearly three weeks ago.
On Saturday morning, a crowd gathered to march from Havelock North village to Hastings city centre, to show their support for the sick and to call for answers.
Ahead of the hikoi, Green Party MP Catherine Delahunty she would attend to show support for the community.
"It's unacceptable that in 'lean, green New Zealand', people should have to endure an outbreak like this," she said.
Mayor Lawrence Yule joined councillors and MPs in the crowd.
This week residents were told they would need to boil drinking water for at least another three or four days, despite hope the boil-notice would be dropped.
Hastings District Council chief executive Ross McLeod told those at a public meeting in Havelock North on Wednesday night that more water needed to be flushed through the system.
The Government has launched an independent inquiry into the contamination.